Annunciator.



. as W l/VVZi/VTOR W fl qw PATENTED OCT. 17, 1905.

2 SHEETS-SHEETI.

A L PETERSON ANNUNGIATOR.

APPLIGATION FILED APR.10. 1905.

W1 TNESSES;

PATENTED OUT. 17, 1905. A. L. PETERSON. ANNUNUIATOE.

APPLICATION FILED APRJYO. 1905 Alli/471?? UNITED STATES PATENT orrion.

ANNUNCIATOR.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed April 10,1905. Serial No. 254,754.

lb all] whom, it nuw concern:

Be it known that I, ALFRED LAURENTIUS PETERSON, a citizen of the UnitedStates, residing at Clipper Mills, in the county of Butte and State ofCalifornia, have invented new and useful Improvements in Annunciators,of which the following is a specification.

My invention is an annunciator for telephones, and more particularly adevice to indicate that a call has been received.

The invention comprises a drop shutter which is actuated by the hammerof the callbell, so that when a call is received during the absence ofthe person that fact will be visually indicated upon his return. Insteadof a dropshutter a card or slate can be used in connection with a pencilwhich makes adash on the card or slate when the call-bell rings and thusindicates that a call has been received. Means are also provided fordisconnecting the shutteractuating mechanism from the bell to render thedevice inoperative when so desired and without removing it from thetelephone instrument.

Improved details in the construction and arrangements of the variousparts of the invention will be apparent from the detailed descriptionhereinafter, reference being had to the accompanying drawings, in whichFigure 1 is a front elevation of the invention in position on thetelephone-receiver box, and Fig. 2 is a side elevation thereof. Fig. 3is a top plan view, the drop-shutter being removed. Fig. 4 is a centralvertical section.

Fig. 5 is a rear elevation. Fig. 6 is, an edge view of the drop-shutterand its supportingplate. Fig. 7 is a front elevation of the invention,showing the modified form in which a cardboard or slate is used on whichthe call is recorded by a pencil.

Referring specifically to the drawings, 10 denotes the door of atelephone-receiver box, and 11 the call-bell. A plate 12 is clamped tothe door, on the outside thereof, by brackets 14 and 15, which arespaced from each other by a block 16 extending therebetween. The

outer ends of the block are reduced and threaded and extend through thebrackets, the parts being securely fastened together by nuts 17, whichare screwed on the projecting threaded ends of the block. At the top andbottom of each bracket are outwardly-extending stems 18, which extendthrough holes in the plate 12 and are threaded on their outer ends toreceive clamping-nuts 19. The bottom of each-bracket is also formed witha shoulder 20, which fits over the inner top edge of the door.Set-screws 21 are threaded to the brackets at the top thereof. Thebrackets 14 and and the plate 12 are securely clamped to the door upontightening up the nuts 19. The set-screws 21 are extended against theback of the plate, and they can be set and regulated according to thethickness of the door.

At 22 is indicated a holder for the shutter, to be describedhereinafter. The holder is slidably mounted on the stems 18, its cornersbeing shaped to fit thereon. An undercut groove 23 is made in the backof the holder, in which groove a frame 24 is placed. In

said frame a screw 25 is loosely secured, which screw is threadedthrough the block 16 and has on its outer end a finger-button 26. Whenthe screw is rotated, the holder will slide back and forth on the stems18. A cleat 27 extends across the holder in front along the bottom andsides thereof, and the holder also carries spring-fingers 28 for apurpose to be described hereinafter.

' The plate 12 has an undercut vertical slot 29, through which thepivot-screw 30 of the lever 31 extends. The bolt is retained in the slotby its head 32, which fits in the undercut portion of the slot. A sleeve33 is mounted on the pivot-screw outside the slot and ex- "Itendsthrough the bearing 34 of the lever.

The inner end of the sleeve is enlarged, as at 35, which fits againstthe plate 12 and acts as a washer to space the lever 31 therefrom. Theopposite end of the sleeve extends slightly beyond the bearing 34. A nut36 is screwed on the outer end of the pivot-screw against the projectingend of the sleeve. By this construction when the nut 36 is screwed tightthe pivot-screw will be securely fastened in the slot without bindingthe lever, and thus preventing it from swinging freely. The pivot screwcan be readly adjusted up and down in the slot by simply loosening thenut 36.

The lower end of the lever is forked, as at 37,

and straddles the stem of the bell-hammer 38.

This end of the lever is also made slightly heavier than its oppositeend, but not enough to interfere with the ringing of the bell. To theupper end of the lever a flexible strip 39 is secured, which carries asocket-piece or clamp 40 for a purpose to be described hereinafter.

The drop-shutter is indicated at 41, being hinged, as at 42, at the topof a supportingplate 43, which is placed on the cleat 27 of the holder22 and behind the spring-fingers 28, whereby it is securely supported'onthe holder; A trigger is pivoted in the plate and controls a spring-arm44,secured to said plate. The trigger comprises two arms 45 and 46, respectively, which extend in'opposite direction and are joined byacross-piece 47, the latterextending loosely through theplate 43. arm 45extends downwardly in front of the plate, and the arm 46 extendsupwardly behind the plate. 47 provided with a notch48, in which thespring-arm 44 is placed and whereby it is held retracted. The spring-armis located behind the shutter and is arranged to strike the-same whenreleased and to cause it to drop forwardly to the position shown bydotted lines in Fig. 2. A slide 49 is dovetailed into a slot in theplate 43, and said slide when removed permits the trigger to be put inposition on the plate. 50, which is fastened to the edge of the plateand extends over the outer end of the slide. A pin 51 projects from theface of the plate 12 to limit the swing of the trigger-arm 45.

The operation of the device is as follows: The lever 31 straddles thehammer-stem, the upper end of the lever being arranged to extend intothe path of the trigger-arm 45. A recess is formed in the plate 12,in-which the end of the lever works. The supportingplate 43 is inposition on the holder 22 with the shutter 41 up,-as shown in'Fig. 1.The

spring-arm 44 is placed in the notch 48 and held retracted thereby. Whenthe call-bell rings, the vibrating hammer-stem causes the lever 31to-swing: and strike the trigger-arm' 45. This causes the trigger-arm 46to swing also, whereby the spring-arm 44 is released from the notch 48.the shutter and knocks it over against the front of the plate 12, asshown in Fig. 2.

Instead of the shutter apiece of cardboard The socket-piece is split, asat 54, and is also made tapering, so that the pencil will be securelyclamped therein by frictional contact.- By reasonof the flexibleportion-'39 of the le- The The arm 46 has an extension The slide is heldlocked by alatch The spring-arm strikes When a callis received,

ver 31 the pencil is made to engage the card or slate with a slightpressure, which is regulated by adjusting the holder 22 to or from thepencil.

The manner in which the device is attached to the door does notinterfere with its opening or closing, and it can be fastened withoutmarring or disfiguring the instrument. The device is readily renderedinoperative when sodesir'ed by removing the lever 31 from thehammer-stem. This is doneby simply loosening the nut 36-and sliding thepivot-screw upwardly in the slot 29 until the lever clearsthehammer-stem. As the lever straddles the hammer-stem, there is nodanger of the indicator missing a call. The forked end of the leverbeing slightly heavier than its opposite end, it will hang perpendicularwhen not in use or when lifted clear of the hammer-stem, thus enablingit to be more readily lowered and adjusted on the hammer-stem.

Having thus described my invention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. The combination with a bell and an indicating. device, of a slottedsupporting-frame, a pivot-screw adjustablysecured in the slot of theframe, and a lever swinging on the screw and engageable by thebell-hammer stem to actuate the indicating device when the bell issounded.

2. The combination with a bell and an indieating device, of a slottedsupporting-frame,

apivot-screw adjustably secured in the slot of the frame, and a forkedlever swinging on the screwand-straddling the bell-hammer stem toactuate the i'ndicating device-when the bell is sounded.

3. The combination with a bell, and adropshutter, ofa slottedsupporting-frame, a pivotscrew adjustably secured in the slot of theframe, and alever swinging on the screw and engageable-by thebell-hammer stem to actuate-the shutter when the bell is sounded.

4. The combination with a bell and a dropshutter, of a spring-armconstructed to strike the shutter to trip the same, a trigger to holdthe spring-arm retracted, and meansactuated by the bell-hammer stem foroperating the trigger torelease the spring-arm when the bell is sounded.

5. The combination with a-bell and a dropshutter, of aspring-armconstructed to strike the shutter to trip the same, a trigger to holdthe spring-arm retracted, and a lever actuated by the bell-hammer stemfor operating the trigger to release the spring-arm when the bellissounded.

6. The combination with a bell and a dropshutter, ofa spring-armconstructed to strike ing the trigger to release the spring-arm whenoperating the trigger to release the spring-arm I the bell is sounded.when the bell is sounded.

7. The combination with a bell, of a slotted In testimony whereof I havesigned my name supporting-frame carrying a drop-shutter, a to thisspecification in the presence of two sub- 5 spring-arm constructed toengage the shutter scribing witnesses.

to drop the same, a trigger to hold the spring- ALFRED LAURENTIUSPETERSON. arm retracted, a pivot-screw adjustably se- Witnesses: curedin the slot of the supporting-frame, and C. F. ADAMS,

a lever actuated by the bell-hammer stem for HECTOR AoHoRN.

